Organic-Inorganic Hybrid Acrylate Dental Restorative Nanocomposite Resin
Date Issued
2005
Date
2005
Author(s)
Hsu, Sheng-Hao
DOI
zh-TW
Abstract
Compare to traditional filler, nanoparticles give composite materials higher mechanical properties and transparency. On the other hand, dental restorative resins should fulfill the requirements of aesthetic and strength, So the use of nanoparticles in formulation of dental restorative composite resin has been a new trend.
In this research, photocurable organic-inorganic hybrid was made of two different sizes of nanoparticles treated by silane coupling agent, and an acrylate matrix, which consisted of hydroxypivalaldehyde modified trimethylolpropane diacrylate (HTPDA), tricycylodecane dimethanol diacrylate (TCDDA), and ethoxylated(2) bisphenol A dimethacryalate (EO(2)BDMA). The developed nanocomposite was compared with five commercial material using thermal analysis, water absorption test, and mechanical test to evaluate the feasibility for application on dental restoration.
As compared with commercial materials, the best formulation (F-80) had the lowest coefficient of thermal expansion, the lowest water absorption, comparable cytotoxicity with better bio-compatible commercial resins, high microhardness of 87.06Hv(higher than most commercial resins), and acceptable polymerization shrinkage . The value of microhardness became stable after light curing for 40 seconds. This met the requirement of dental clinic. If the diametal tensile strength can be improved, this developed material will be very suitable for restorative material in dental clinic.
Subjects
奈米粒子
壓克力
有機無機
光聚合
牙科填補複合材料
acrylate
nanoparticle
organic-inorganic
photocurable
dental restorative material
Type
thesis
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